Carbureter.



H. N. MOTSI'NGER.

I GARBURBTBR,

APPLIUATION FILED SEPT. 25, 1909.

Patented Mar. 26, 1912.

UIITED sTATEsPATENT OFFICE. 1

nonna-NQ MorsINGEn, or PENDLETON, INDIANA, A ssIGNon'To norsINGER DEVICE utAmIrAcTurismeA COMPANY, or LA vJeAxznrrrn, INDIANA, A conPonA'rIoN or A cmunnrnn pacification of Letters Ilatelit.l Patented Mlal'. 26,

Applicationled September 25,1909. Serial No. 519,604.

1 'o auge/wm zt may concern: y

4Be it known that I, Bomen N. MOTSINGER,

' a citizen of the United States, 'residing at Pendleton,v in the county ofllladison and State of Indiana, have invented certain new and useful Improvements in Carbureters, 'of which the following is a specication.

In carbureters as heretoforef commonly constructed a fuel nozzle of comparatively small' areav is arrangedwith its-discharge outlet within an aii'passagfav thear'ea fof which `is suicient. to" supply*thema;irnumf i demand of the 'motonandjfamregulatmg member is then I arranged in coiJllil'cti with the air passageby rrxeansofA -lich eective vacuum on 'the gasolene nozzlel pro portional to the quantity, of siii/entering," maintained at'the right amount, or' approxi matically shifted in acfirda-ncel with I the"l speed of 'the motor and consequentjuell-defmand of the mot It has geneally'fbeen. recognized ihet'such a construction y j.;0n1y1 an approximation w an,ide1 y condition, heer-,11563, at--the slov'vfes `151'V lowest suction 'of the I'notor,'theareaifof'the'l pipe being,r euch `to besutlintfiforthe-' maximum demand of the Ino'toigtll'elairl' 'speed is so lor.' that the gasoleno'disoharged the vacuum A proper amount of gasolene to louffxgnithe nozzle 1st-exceedingly greauthus causing; a.

from. the nozzle falls down and not 'properly vaporize, w'hile'at themaztimum demand. the size of the nozzleha'ving to he small for the minimumde1nand, necessary to f qlid'uce-` j the reduction in the horse power of theniotor, due to thc throttling effect of the":internatio-4 air valve through w hich the major 'air supply must be drawn.` The umtcl'iability of moving parts and illielr liabilitytto become clogged with dirt ir. also veryoheciiohable; I have discovered that a sali actory-carf bureting velocity of anair current att-sing able ywith., tlie vacuum prmliicihle byv thev movement cj an ordinary motor bythe-nd,- cannot be cl/,itained ina passager havngian area. mater-*indy exceoiing'the areagof :L passage three-eighths t,o.`ctehalf.ot`- an inch in diameter,- and that in such a passage, whilethe air velocity therethrough will vbe in-i creased by anincree'se of speedof theen? gine, yet such increase of air velocity only affects the fuel in such way as to supply an mately so. This device"` is"generally`'autori-ill 2Q adequate and proper additional amount of fuel to the increased volume of air. Such a tube however, is not of' suilicientcapacity to supply an adequate volume of carbureted air to a motor of any commercial size. l have therefore found that, in orderfto produce perfect Carburation at all speeds of themotor, and at the Sametime to supply anode/quete volume of carbureted aiuto v'thev motor at all-speeds, it is necessary to provide a plurality of carbureting units, the 'fcarhuretiug working adjustment.v of' each vof which is fixed during operation, but which l:maybe connected with or disconnected from 'thek'notor-in succession. i

'"1`he, ob`ect of'iny present invention is liatfinglthe lqualities" described. v The accompanying drawings illustrate myV invention.

' Figure 1 is a full sized elevation in )artial 'constructed in vaccordance with my inventionfand Fig. 2a plan ofthe upper end thereof.. y In ,the drawings, 10v indicates a, fuel res*- zi. plate l1 having a central cup-like depression 12 through which are projected :is many fuel nozzles 13 as may he desired. Projectingl downwardly into the cup-like the tubes 14, the lower ends of which vare open and lie below the upper ends of the `nozzles These tubes 14 are so adjusted in size, relative to the fuel nozzles 13, that the vacuum .producible by the motor with ju'hich the carburetor is to work, will pro duce that amount orulifting on the fuel which will produce proper carburation of tubes 14 Vshould be approximately three.- eighth's to one-half of an inch in diameter.- The upper ends of all of the tubes 14 deliver 'into e valve chamber 15 within which is fitted a longitudinally' movable lug valve 16. 5Chamber .15 may deliver directly to a ldistfibuting chamberi'r'om which pipes (notshown) maybe; Iledto `thev several motnrylinders'to'e suppled,"but I have "found experimentally that it is-'desirablc to continue thetubes to a point as neer 'a ldepression 12, one over each'nozzle 13, are

`airvelocities attainable therethrough b vpossible to the cylinders to he supplied,'ancltherefore to produce a carbureter structure 'ygertical section of a-carbureter which have ervoir the upper end of which is closed by 'the air. In` practice, I have found that the r umm.

for that reason, in the form shown in the drawings, I have shown a' plurality of tubes 17, of the size and number corresponding l'to tubes 14; leading I-rom the upper end or side of chamber 15 and delivering to a distributingr liead 1S. Valve 1G may be longitudinally moi ed so as to successively open tubes 14 into the valve chamber, and inversely successively close the said tubes, by any suitable means. lt will be noticed that the valve chamber, in which valve 16 is mounted, is, 'when the valve is in closed position, completely filled and that, as the valve 16 is moved'in the opening direction.

the volume of the valve chamber is increased in direct relation with the increased number of carbureter units brought into play by such movement and therefore the veloci'tv of the carbureted air is not decreased as it passes through the valve chamber. This is an important featureof my invention. It is Well known that when air at a given velocity is caused to take up a fuel vapor, such as gasolene, at a velocity which produces maximum elliciency, there will be a precipitation of the fuel vapor if the velocity of the air is permitted to materially drop and it is therefore important to maintain the velocity of the carbureted air at its maximum eiliciency to a pointas close as possible to the combustion chamber of the engine.

Any suitable controlling means, for maintaining a proper level of fuel within the cup 10, may be provided, the particular construction of this portion of the mechanism forming `no part of my present invention.

`While I have shown the relation between the fuel nozzle and the mixing tube'as being non-adjustable it is to be understood that, in practice, so far as my invention is concerned, there may be an adjustability between these parts by means of which the effective carbureting relation may be varied for different atmospheric and fuel` conditions, but such adjustment-will be a nonautomatic one so far as the operation of the motor, with which the carbureter is to work,

is concerned, these parts of the carburcter, during operation, remaining in a fixed car bureting relation throughout the variations of velocity of the motor.

The slight difference in height4 of the tubes 14 relative to the nozzles 125 is merelya matter of convenience 1n manufacture and. v

does not materially ali'ect the operation of the structure so long as the relation is ,a fixed one.

I claim as my invention: l. A carburetor comprising a plurality of mirburcting units each having a fixed carbureting relation, and all delivering into a valve chamber, a valve normally filling said.

valve chamber and movable to successively and cumulatively bring the carbureting the`t`wo sets of tubes.l

units into communication 'with said valve chamber and to increase the mixture-receiving volume of such valve chamber, said valve chamber bearing such relation to the carbureting units delivering-thereto that the velocity of delivery from the carbureting unit through said valve chamber will not bematerially decreased as it passes through the valve chamber.

2. A carbureter comprising a plurality of carbureting units each havin a fixed carbureting relation, and all delivering into a valve chamber, a valve normally filllng said valve chamber and movable to successively and cumulatively bring the carbureting units into communication with said. valve chamber, and a plurality of tubes leading from said valve chamber and corresponding in' size and number with the carburetin units delivering to said valve chamber, sa-i valve chamber bearin such relation to the carbureting units de ivering thereto that the velocity of delivery from a carbureting unit through said valve chamber tothe corresponding -tube will notbe materially de creased as it passes through the valve chamber.

3. A carbureter comprising a valve chamber having a plurality of passages delivering thereto and a corresponding `plurality of passages leading therefrom, a plurality of fuel nozzles one mounted in each f th aforesaid leading-in passages and having i normally fixed carbureting relation thereto a fuel reservoir communicating with' sai( fuel nozzles, and a-valve mounted in an(` filling said valve chamber and movable tu successively and cumulatively open commu nication from the leading-in passages intl the valve chamber.

4. A carbureter foriinternal' combustioi engines, comprising a fuel reservoir, a plu rality of fuel`nozzlesvleading therefrom, z plurality of air tubes, one assmiated witl each of said nozzles and having` a fixed car lmretingrelat-ion thereto, said' tubes deliver ing into a valve chamber, a correspondin; series of tubes leading from said valv `chamber to a point close to the inlet valv of 4the engine, and a valve arranged withii the valve chamber and movable to succes sively open and close the connection betweei 5. A carbureter for internal combustioi engines, fcomp'rising a fuel reservoir, a plu rality "of fuel nozzles leading therefrom, plurality of air tubesoue associated ivit4 each of said nozzles and having a fixed cai bureting relation thereto, and having acros section not materially exceeding that withi which the vacuum, producible by themotc with which the apparatus 'is to work, wi produce, at minimum velocity, a fuel delli cry from the nozzle, said tubes deliverin in a valve chamber, a corresponding serif of tubes leading yfrom said valve chamber my hand and seal at Indianapolis, Indiana.,

to u' point close to the inlet valve' of the enthis twenty-second day of Septembei, A. D.

gine, and a valve arranged within the valve one thousand nine, hundred and nine.

chamber and movable to successively open HOMER N. MOTSINGER. in. SI1.

aud close the connection between the two Witnessesz sets of tubes. ARmUn M. HOOD, l )In Witness whereof, I .havehereunto set THOMAS W. MCMEANS. i 

